here we discuss about atomic structure

1. THESTRUCTUREOFANATOM
PRESENTED BY GROUP-3
Md Istiak – 221002008
Md Topu Hassan – 221002394
Khushbuzaman -221002066
Musfiqur Rahman Zisan -221002145

2. WHATIS AN ATOM!
• Matter is anything that takes up space and has mass.
• All matter is made of atoms.
• Atoms are the building blocks of matter, sort of how bricks are the
building blocks of houses.

3. PARTS OF THE ATOM
• A model of the atomic nucleus showing it as a compact
bundle of the two types of nucleons: protons and
neutrons.
• In simple diagrams they look like little balls stuck
together but an actual nucleus cannot be explained like
this but only by using quantum mechanics.
• In a nucleus which occupies a certain energy level each
nucleon. can be said to occupy a range of locations.
Nucleu
s

4. PARTS OF THE ATOM
Neutron
• The neutron is a subatomic particle with no electric
charge.
• The nucleus consists of a number of protons and
neutrons.
• In the nucleus, the protons and are bound together
neutrons through nuclear force.

5. PARTS OF THE ATOM
• The proton is subatomic particle with a positive
electric charge.
• The nucleus consists of a number of protons and
neutrons.
• The mass of the proton is slightly larger than that
of neutron.
• The number of protons in the nucleus is referred to
as it's atomic number.
Proton
s

6. PARTS OF THE ATOM
• The electron is a subatomic particle with a negative
charge.
• The mass of the electron is approximately 1/1836 that
of proton.
• An electron generates a magnetic field.
• Electrons have many applications, including electronics,
welding, cathode ray tubes, electron microscopes,
radiation therapy, lasers, gaseous ionization detectors
and particle accelerators etc.
Electron
s

7. RUTHERFORD'S ATOMIC MODEL
• Atom has a positively charged central part (nucleus).
• Electrons are distributed around nucleus.
• Mass of an atom is concentrated at nucleus.
• Compared with total volume of an atom, the volume
of nucleus is meager.
Ernest Rutherford
(1871-1937)

8. BOHR'S MODEL OF THE ATOM
• Electrons orbit the nucleus like planets orbit the sun.
Niels Bohr
1913

9. BOHR'S MODEL OF THE ATOM
• Electrons fills the orbits closest to the Nucleus.

10. BOHR'S MODEL OF THE ATOM
• Each orbit can hold a specific maximum number of electrons.

11. PLANETARYMODEL OF ATOM

12. THANKYOU